<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="文件名称" prop="name">
        <el-input v-model="queryParams.name" placeholder="请输入文件名称" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item label="部门名称" prop="deptId">
        <el-input v-model="queryParams.deptName" placeholder="请输入部门名称" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>

      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd" v-hasPermi="['edu:file:add']">新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="success" plain icon="el-icon-edit" size="mini" :disabled="single" @click="handleUpdate" v-hasPermi="['edu:file:edit']">修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="danger" plain icon="el-icon-delete" size="mini" :disabled="multiple" @click="handleDelete" v-hasPermi="['edu:file:remove']">删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="warning" plain icon="el-icon-download" size="mini" @click="handleExport" v-hasPermi="['edu:file:export']">导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="fileList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="id" align="center" prop="fileId" />
      <!-- <el-table-column label="部门id" align="center" prop="deptId" /> -->
      <el-table-column label="部门名称" align="center" prop="deptName" />
      <el-table-column label="文件名称" align="center" prop="name" />
      <el-table-column label="文件路径" align="center">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-edit" @click="handleDownloadFile(scope.row)">下载文件</el-button>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)" v-hasPermi="['edu:file:edit']">修改</el-button>
          <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)" v-hasPermi="['edu:file:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination v-show="total>0" :total="total" :page.sync="queryParams.pageNum" :limit.sync="queryParams.pageSize" @pagination="getList" />

    <!-- 添加或修改文件对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="文件名称" prop="name">
          <el-input v-model="form.name" placeholder="请输入文件名称" />
        </el-form-item>
        <el-form-item label="部门id" prop="deptId">
          <treeselect v-model="form.deptId" :options="deptOptions" :show-count="true" placeholder="请选择归属专业" />
        </el-form-item>
        <el-form-item label="文件" prop="path">
          <el-upload class="upload-demo" :action="upload.url" drag :multiple="false" :file-list="pathList" :limit="1" :headers="upload.headers" :on-success="handleFileSuccess" :before-upload="beforeFileUpload">
            <i class="el-icon-upload"></i>
            <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
            <div class="el-upload__tip" slot="tip">上传文件不能超过20MB</div>
          </el-upload>
        </el-form-item>
        <el-form-item label="备注" prop="remark">
          <el-input v-model="form.remark" type="textarea" placeholder="请输入内容" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listFile, getFile, delFile, addFile, updateFile } from "@/api/edu/file";
import { deptTreeSelect } from "@/api/system/user";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";
import { getToken } from "@/utils/auth";
export default {
  name: "File",
  components: { Treeselect },
  data () {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 文件表格数据
      fileList: [{
        fileId: 1,
        name: '测试文件',
        deptName: '软件工程',
        path: 'http://123.60.178.72:9000/ccedu/2024/01/09/菜单设计_20240109164200A001.txt'
      }],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        name: null,
        deptId: null,
        path: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
      },
      deptOptions: null, //部门树
      upload: {
        // 是否禁用上传
        isUploading: false,
        // 设置上传的请求头部
        headers: { Authorization: "Bearer " + getToken() },
        // 上传的地址
        url: process.env.VUE_APP_BASE_API + "/file/upload",
      },
      pathList: []
    };
  },
  created () {
    this.getList();
    this.getDeptTree();
    // this.loading = false;
  },
  methods: {
    /** 查询文件列表 */
    getList () {
      this.loading = true;
      listFile(this.queryParams).then(response => {
        this.fileList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    //获取文件后缀
    getFileExtension (filename) {
      return filename.split('.').pop();
    },
    //获取文件后缀
    getFileName (path) {
      return path.split('/').pop();
    },
    handleDownloadFile (file) {
      let filename = this.getFileName(file.path)
      console.log(filename)
      let fileExtension = this.getFileExtension(filename)
      console.log(fileExtension)
      this.$download.saveAs(file.path, file.name + "." + fileExtension);
    },
    /** 查询部门下拉树结构 */
    getDeptTree () {
      if (!this.deptOptions) {
        deptTreeSelect().then(response => {
          this.deptOptions = response.data;
          //查询所有的学生
          // classRemoteMethod(null)
        });
      }

    },
    handleFileSuccess (res, file) {
      this.form.path = res.data.url;
    },
    beforeFileUpload (file) {
      const isLtSize = file.size / 1024 / 1024 < 20;
      if (!isLtSize) {
        this.$message.error('上传文件大小不能超过 20MB!');
        return false;
      }
      return true;
    },
    // 取消按钮
    cancel () {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset () {
      this.form = {
        fileId: null,
        name: null,
        deptId: null,
        path: null,
        delFlag: null,
        createBy: null,
        createTime: null,
        updateBy: null,
        updateTime: null,
        remark: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery () {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery () {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange (selection) {
      this.ids = selection.map(item => item.fileId)
      this.single = selection.length !== 1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd () {
      this.reset();
      this.open = true;
      this.pathList = []
      this.title = "添加文件";
    },
    /** 修改按钮操作 */
    handleUpdate (row) {
      this.reset();
      const fileId = row.fileId || this.ids
      getFile(fileId).then(response => {
        this.form = response.data;
        this.open = true;
        this.pathList = [{ name: this.form.name + "." + this.getFileExtension(this.getFileName(this.form.path)), url: this.form.path }]
        this.title = "修改文件";
      });
    },
    /** 提交按钮 */
    submitForm () {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.fileId != null) {
            updateFile(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addFile(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete (row) {
      const fileIds = row.fileId || this.ids;
      this.$modal.confirm('是否确认删除文件编号为"' + fileIds + '"的数据项？').then(function () {
        return delFile(fileIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => { });
    },
    /** 导出按钮操作 */
    handleExport () {
      this.download('edu/file/export', {
        ...this.queryParams
      }, `file_${new Date().getTime()}.xlsx`)
    }
  }
};
</script>
